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FAILED: patch "[PATCH] ARC: vdk: Fix support of UIO" failed to apply to 4.10-stable tree

PATCH [email protected] 2 participants 2 messages Apr 3, 2017

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#0 lore raw

The patch below does not apply to the 4.10-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

Quoted 1 line

From ae9955aeb8e47c4f60a02add47acf9850ca0ead7 Mon Sep 17 00:00:00 2001

From: Alexey Brodkin <[email protected]>
Date: Thu, 23 Mar 2017 20:34:45 +0300
Subject: [PATCH] ARC: vdk: Fix support of UIO

MotherBoard section has its "ranges" set to 0xE000_0000-0xF000_0000. But UIO node maps 4 different areas in different memory locations and all outside MB's ranges.

That obviously breaks UIO mappings in runtime.

Cc Ruud Derwig <[email protected]>
Cc [email protected]
Signed-off-by Alexey Brodkin <[email protected]>
Signed-off-by Vineet Gupta <[email protected]>
arch/arc/boot/dts/vdk_axs10x_mb.dtsi +13 -7
index f0df59b23e21..459fc656b759 100644
@@ -112,13 +112,19 @@
 			interrupts = <7>;
 			bus-width = <4>;
 		};
+	};
 
-		/* Embedded Vision subsystem UIO mappings; only relevant for EV VDK */
-		uio_ev: uio@0xD0000000 {
-			compatible = "generic-uio";
-			reg = <0xD0000000 0x2000 0xD1000000 0x2000 0x90000000 0x10000000 0xC0000000 0x10000000>;
-			reg-names = "ev_gsa", "ev_ctrl", "ev_shared_mem", "ev_code_mem";
-			interrupts = <23>;
-		};
+	/*
+	 * Embedded Vision subsystem UIO mappings; only relevant for EV VDK
+	 *
+	 * This node is intentionally put outside of MB above becase
+	 * it maps areas outside of MB's 0xEz-0xFz.
+	 */
+	uio_ev: uio@0xD0000000 {
+		compatible = "generic-uio";
+		reg = <0xD0000000 0x2000 0xD1000000 0x2000 0x90000000 0x10000000 0xC0000000 0x10000000>;
+		reg-names = "ev_gsa", "ev_ctrl", "ev_shared_mem", "ev_code_mem";
+		interrupt-parent = <&mb_intc>;
+		interrupts = <23>;
 	};
 };
#1 lore raw

Hi Greg,

Quoted 4 lines · On Mon, 2017-04-03 at 14:32 +0200, [email protected] wrote:

The patch below does not apply to the 4.10-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

That's an expected behavior.
Support of UIO was added just in v4.11-rc1 thus fix makes no sense for older kernels, just drop this one.

-Alexey